power transistor check

Thread Starter

jody

Joined Nov 12, 2012
39
hi
i have a bux 127 power transistor. when i check between c an e with multimeter on diode check should it be open reading either way round. if i check a smaller low power transistor that is what i get. the transistor is new from a lucky bag so i assume its ok.
 

MrChips

Joined Oct 2, 2009
30,707
c to e should appear open in both directions

bux127 is a darlington and hence don't expect the same readings as with a regular NPN BJT when reading b to c and b to e.
 

Thread Starter

jody

Joined Nov 12, 2012
39
thanks
in one direction on c and e im getting .700 on the meter and the other open circuit, could this be because its a darlington type.
 
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